Ni Ni Lin Eain began her pageantry in 2022 by participating in the
Miss Universe Myanmar 2022 pageant, where she was elected as one of the 16 national finalists. However, Ni Ni Lin Eain later withdrew from the competition on 1 October, prior to the coronation night, due to her mother's unstable health. Ni Ni Lin Eain represented
Myanmar at
Miss Grand International 2023, held at the
Phú Thọ Indoor Stadium in
Ho Chi Minh City,
Vietnam, where she won the Global Beauties Choice – Miss Photogenic Award and the Grand Pageant's Choice Award at the preliminary competition launched on 24 October 2023. In the pageant's grand final round held on 25 October, Ni Ni Lin Eain won the Country's Power of the Year Award, which automatically qualified her for the top 20. At the end of the competition,
Luciana Fuster of
Peru became the winner, and Ni Ni Lin Eain finished as the first runner-up. ==Filmography==